ENCLOSURE, BATTERY AND POWER CONSUMING DEVICE

1 . An enclosure for accommodating battery cells, comprising:

a positioning member, comprising a bottom wall and a side wall connected to a circumference of the bottom wall, the side wall and the bottom wall enclosing and defining a positioning cavity, and the bottom wall being provided with a hollow portion;

a fixing frame, located in the positioning cavity and configured to enclose the battery cells; and

a backplate, disposed on one side of the bottom wall facing away from the positioning cavity.

2 . The enclosure according to claim 1 , further comprising:

a reinforcing beam, disposed on one side of the side wall facing away from the positioning cavity, the reinforcing beam being in the shape of a ring surrounding the positioning cavity.

3 . The enclosure according to claim 2 , further comprising:

a heat sink arranged between the backplate and the bottom wall, at least part of the heat sink being exposed from the hollow portion.

4 . The enclosure according to claim 3 , wherein the bottom wall is recessed toward the positioning cavity to form a positioning recess, at least part of the heat sink being restricted to the positioning recess.

5 . The enclosure according to claim 4 , wherein the heat sink comprises a body portion and a heat-dissipation channel, the heat-dissipation channel is raised from the body portion, and at least part of the heat-dissipation channel is restricted to the positioning recess.

6 . The enclosure according to claim 4 , wherein the bottom wall is recessed toward the positioning cavity to form a sealant groove, the sealant groove is located inside the positioning recess, and a sealant is provided in the sealant groove, such that the heat sink is bonded to the bottom wall by the sealant.

7 . The enclosure according to claim 6 , further comprising:

a first connecting member, wherein the heat sink and the reinforcing beam are connected to each other by the first connecting member, and the first connecting member is located on an outer side of the sealant groove facing away from the positioning cavity.

8 . The enclosure according to claim 3 , wherein

the fixing frame comprises a ring-shaped side beam and a positioning beam located inside the side beam, the side beam is connected to the side wall, and two ends of the positioning beam are connected to the side beam, such that the positioning cavity is divided into a plurality of spaces for accommodating the battery cells; and

the heat sink is further connected to the positioning beam by a second connecting member.

9 . The enclosure according to claim 3 , further comprising:

a third connecting member, wherein the backplate is connected to the reinforcing beam by the third connecting member, and the heat sink is provided with a clearance slot, such that the third connecting member passes through the clearance slot to connect the backplate and the reinforcing beam disposed outside.

10 . The enclosure according to claim 2 , wherein the side wall is provided with a flange at one end facing away from the bottom wall, the flange is shaped in a direction extending away from the positioning cavity, and the reinforcing beam is located on one side of the flange facing toward the bottom wall.

11 . The enclosure according to claim 1 , wherein the bottom wall comprises a first section and a second section, the first section is configured to carry electrical components, the second section is configured to accommodate the battery cells, and the hollow portion is disposed in the second section.

12 . The enclosure according to claim 1 , wherein the bottom wall and the side wall are integrally formed, and the side wall is in the shape of a closed ring surrounding the positioning cavity.

13 . A battery, comprising:

the enclosure according to claim 1 ; and

battery cells located inside the enclosure.

14 . A power consuming device, comprising the battery according to claim 13 , the battery being configured to provide electrical energy.